| HLT | heart-lung transplantation; human lipotropin; human lymphocyte transformation |
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| hPL | human placental lactogen; human platelet lactogen |
| HPV | Hemophilus pertussis vaccine; hepatic portal vein; human papillomavirus; human parvovirus; hypoxic p... |
| HRV | heart rate variability; human reovirus; human rotavirus |
| HSP | Health Systems Plan; heat shock protein; hemostatic screening profile; Henoch-Schonlein purpura; her... |
| human genome project | <molecular biology> A worldwide project to determine the DNA sequence of all the DNA in humans, funded primarily by the U.S. Department of Energy (DOE), the U.S. National Institutes of Health (NIH), the European Commission (EC), and the pharmaceutical and biotechnology industries. The project will be completed in stages, beginning with a genetic map of man and a sequencing of all human cDNA. As part of the Human Genome Project, the genomes of several other plant and animal models are being studied. (14 Nov 1997) |
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| human granulocytic ehrlichiosis | A form of ehrlichiosis in a patient with a history of tick bite. Characterised by leukopenia, thrombocytopenia, and mild liver damage. (Thought to be predominantly a granulocytic form of ehrlichiosis.) The species of Ehrlichia that is the agent of this disease is unknown at present. (05 Mar 2000) |
| human growth hormone | <endocrinology> A protein produced in the pituitary gland that stimulates the liver to produce somatomedins, which stimulate growth of bone and muscle. (09 Oct 1997) |
| human herpesvirus 1 | Herpes simplex virus, type 1. See: herpes simplex. (05 Mar 2000) |
| human herpesvirus 2 | Herpes simplex virus, type 2. See: herpes simplex. (05 Mar 2000) |
| human herpesvirus 3 | A herpesvirus, morphologically identical to herpes simplex virus, that causes varicella (chickenpox) and herpes zoster in man; varicella results from a primary infection with the virus; herpes zoster results from secondary invasion by the same virus or by reactivation of infection which in many instances has been latent for many years. Synonym: chickenpox virus, herpes zoster virus, human herpesvirus 3. (05 Mar 2000) |
| human herpesvirus 4 | <virology> Species of Herpetoviridae that is responsible for infectious mononucleosis (glandular fever). Discovered in 1964, this virus has been associated with Burkitt's lymphoma in South African children and with nasopharyngeal carcinoma in Asian populations. (27 Sep 1997) |
| human herpesvirus 5 | <virology> Probably the most widespread of the Herpetoviridae group. Infected cells enlarge and have a characteristic inclusion body (composed of virus particles) in the nucleus. Causes disease only in utero (leading to abortion or stillbirth or to various congenital defects), although can be opportunistic in the immunocompromised host. Patients who have been exposed to the virus will remain cytomegalovirus IgG positive. Acronym: CMV (30 Sep 1997) |
| human herpesvirus 6 | A recently discovered human herpesvirus that was found in certain lymphoproliferative disorders, replicates in a number of different types of leukocytes, and is associated with the childhood disease roseola (exanthema subitum). (05 Mar 2000) |
| human herpesvirus 7 | This virus has recently been discovered in association with human lymphocytes; however, a causal relationship to any known disease has not been determined. (05 Mar 2000) |
| human leukaemia-associated antigens | Antigen's on the surface of leukaemic cells which seem not to be present on the surfaces of the same type of normal cells; the myeloblast antigen of acute myelogenous leukaemia found in chronic myelogenous leukaemia is thought to be associated with a "blastic" transformation. (05 Mar 2000) |
| human leukocyte antigen | <immunology> A genetic fingerprint on white blood cells and platelets, composed of proteins that play a critical role in activating the bodys immune system to respond to foreign organisms. Acronym: HLA (16 Dec 1997) |
| human leukocyte-associated antigens | Proteins on the outer part of body cells that help fight illness. These proteins vary from person to person. Scientists think that people with certain types of HLA antigens are more likely to develop insulin-dependent diabetes.The HLA antigens are also responsible for histocompatibility reactions. (09 Oct 1997) |
| human lymphocyte antigen | A system designation for the gene products of at least four linked loci (A, B, C, and D) and a member of subloci on the sixth human chromosome which have been shown to have a strong influence on human allotransplantation, transfusions in refractory patients, and certain disease associations; more than 50 alleles are recognised, most of which are at loci HLA-A and HLA-B; autosomal dominant inheritance. (05 Mar 2000) |
| human measles immune serum | Obtained from the blood of a healthy person who has survived an attack of measles. Synonym: measles convalescent serum. (05 Mar 2000) |